drop table if exists t1; create table t1 (i int); delete from mysql.user where user like 'mysqltest\_%'; delete from mysql.db where user like 'mysqltest\_%'; delete from mysql.tables_priv where user like 'mysqltest\_%'; delete from mysql.columns_priv where user like 'mysqltest\_%'; flush privileges; grant usage on *.* to mysqltest_1@localhost with max_queries_per_hour 2; flush user_resources; select * from t1; i select * from t1; i select * from t1; ERROR 42000: User 'mysqltest_1' has exceeded the 'max_questions' resource (current value: 2) select * from t1; ERROR 42000: User 'mysqltest_1' has exceeded the 'max_questions' resource (current value: 2) drop user mysqltest_1@localhost; grant usage on *.* to mysqltest_1@localhost with max_updates_per_hour 2; flush user_resources; select * from t1; i select * from t1; i select * from t1; i delete from t1; delete from t1; delete from t1; ERROR 42000: User 'mysqltest_1' has exceeded the 'max_updates' resource (current value: 2) select * from t1; i delete from t1; ERROR 42000: User 'mysqltest_1' has exceeded the 'max_updates' resource (current value: 2) select * from t1; i drop user mysqltest_1@localhost; grant usage on *.* to mysqltest_1@localhost with max_connections_per_hour 2; flush user_resources; select * from t1; i select * from t1; i connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK); ERROR 42000: User 'mysqltest_1' has exceeded the 'max_connections_per_hour' resource (current value: 2) select * from t1; i connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK); ERROR 42000: User 'mysqltest_1' has exceeded the 'max_connections_per_hour' resource (current value: 2) drop user mysqltest_1@localhost; flush privileges; grant usage on *.* to mysqltest_1@localhost with max_user_connections 2; flush user_resources; select * from t1; i select * from t1; i connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK); ERROR 42000: User 'mysqltest_1' has exceeded the 'max_user_connections' resource (current value: 2) select * from t1; i grant usage on *.* to mysqltest_1@localhost with max_user_connections 3; flush user_resources; select * from t1; i connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK); ERROR 42000: User 'mysqltest_1' has exceeded the 'max_user_connections' resource (current value: 3) drop user mysqltest_1@localhost; select @@session.max_user_connections, @@global.max_user_connections; @@session.max_user_connections @@global.max_user_connections 0 0 set session max_user_connections= 2; ERROR HY000: Variable 'max_user_connections' is a GLOBAL variable and should be set with SET GLOBAL set global max_user_connections= 2; select @@session.max_user_connections, @@global.max_user_connections; @@session.max_user_connections @@global.max_user_connections 2 2 grant usage on *.* to mysqltest_1@localhost; flush user_resources; select @@session.max_user_connections, @@global.max_user_connections; @@session.max_user_connections @@global.max_user_connections 2 2 select * from t1; i connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK); ERROR 42000: User mysqltest_1 already has more than 'max_user_connections' active connections grant usage on *.* to mysqltest_1@localhost with max_user_connections 3; flush user_resources; select @@session.max_user_connections, @@global.max_user_connections; @@session.max_user_connections @@global.max_user_connections 3 2 connect(localhost,mysqltest_1,,test,MYSQL_PORT,MYSQL_SOCK); ERROR 42000: User 'mysqltest_1' has exceeded the 'max_user_connections' resource (current value: 3) set global max_user_connections= 0; drop user mysqltest_1@localhost; drop table t1;